//
//  main.m
//  06-NSDictionary
//
//  Created by apple on 13-8-12.
//  Copyright (c) 2013年 itcast. All rights reserved.
//


/*
 集合
 1.NSArray\NSMutableArray
 * 有序
 * 快速创建（不可变）：@[obj1, obj2, obj3]
 * 快速访问元素：数组名[i]
 
 2.NSSet\NSMutableSet
 * 无序
 
 3.NSDictionary\NSMutableDictionary
 * 无序
 * 快速创建（不可变）：@{key1 : value1,  key2 : value2}
 * 快速访问元素：字典名[key]
 */

#import <Foundation/Foundation.h>

int main()
{
    NSArray *persons = @[
                         @{@"name" : @"jack", @"qq" : @"432423423", @"books": @[@"5分钟突破iOS编程", @"5分钟突破android编程"]},
                         @{@"name" : @"rose", @"qq" : @"767567"},
                         @{@"name" : @"jim", @"qq" : @"423423"},
                         @{@"name" : @"jake", @"qq" : @"123123213"}
                         ];
    
    //
    // NSDictionary *jim = persons[2];
    
    
    //
    NSString *bookName = persons[0][@"books"][1];
    NSLog(@"%@", bookName);
    //NSArray *array = persons[0][@"books"];
    
    //NSLog(@"%@", array);
    
    // 先取出1位置对应的字典
    // 再取出字典中qq这个key对应的数据
    //NSLog(@"%@", persons[1][@"qq"]);
    
    // NSLog(@"%@", jim);
    return 0;
}

void use4()
{
    // 字典不允许有相同的key，但允许有相同的value（Object）
    // 字典的无序的
    NSDictionary *dict = @{
                           @"address" : @"北京",
                           @"name" : @"jack",
                           @"name2" : @"jack",
                           @"name3" : @"jack",
                           @"qq" : @"7657567765"};
    
    //    NSArray *keys = [dict allKeys];
    //
    //    for (int i = 0; i<dict.count; i++)
    //    {
    //        NSString *key = keys[i];
    //        NSString *object = dict[key];
    //
    //
    //        NSLog(@"%@ = %@", key, object);
    //    }
    
    
    [dict enumerateKeysAndObjectsUsingBlock:
     ^(id key, id obj, BOOL *stop) {
         NSLog(@"%@ - %@", key, obj);
         
         // *stop = YES;
     }];
}

void use3()
{
    NSMutableDictionary *dict = @{@"name" : @"jack"};
    
    
    [dict setObject:@"rose" forKey:@"name"];
}

void use2()
{
    NSMutableDictionary *dict = [NSMutableDictionary dictionary];
    
    // 添加键值对
    [dict setObject:@"jack" forKey:@"name"];
    
    
    [dict setObject:@"北京" forKey:@"address"];
    
    [dict setObject:@"rose" forKey:@"name"];
    
    
    // 移除键值对
    // [dict removeObjectForKey:<#(id)#>];
    
    
    NSString *str = dict[@"name"];
    
    
    //NSLog(@"%@", str);
    
    NSLog(@"%@", dict);
    
    
    //NSLog(@"%@", @[@"jack", @"rose"]);
}

void use()
{
    /*
     字典：
     
     key ----> value
     索引 ----> 文字内容
     
     里面存储的东西都是键值对
     
     
     */
    
    // NSDictionary *dict = [NSDictionary dictionaryWithObject:@"jack" forKey:@"name"];
    
    
    // NSArray *keys = @[@"name", @"address"];
    // NSArray *objects = @[@"jack", @"北京"];
    
    // NSDictionary *dict = [NSDictionary dictionaryWithObjects:objects forKeys:keys];
    
    
    /*
     NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:
     @"jack", @"name",
     @"北京", @"address",
     @"32423434", @"qq", nil];*/
    
    
    NSDictionary *dict = @{@"name" : @"jack", @"address" : @"北京"};
    
    // id obj = [dict objectForKey:@"name"];
    
    id obj = dict[@"name"];
    
    NSLog(@"%@", obj);
    
    
    
    // 返回的是键值对的个数
    NSLog(@"%ld", dict.count);
}
